Bag turning and lining machine



July 22, 1941. L. BUTTIGIEG BAG TURNING AND LINING MACHINE Filed Dec. 28, 1940 4 Sheets-Sheet 1 /NI/E/YTO/? L AWREN (E BUTTIGIEG 311.2519 22, 3941. BUTTlGHEG' v BAG TURNING AND LINING MACHINE 4 Shets-Sheet 2 Filed Dec. 28, 1940 \B i I I W NR b E R July 22, 1941. L. BUTTIGIEG BAG TURNING AND LINING MACHINE Filed Dec. 2 8, 1940 4 Sheets-Sheet 3 LAW 7 4 Sheets-Shet 4 //YVE/77 O/? LAWRENCE BUTTIGIEG 0% Wm AUTO/F 5 July 22, 1941, L. BUTTIGIEG BAG- TURNING AND LINING M ACHINE Filed Dec.

llllllllllll Patented July 22, 1941 UlTED STATES mew OFFICE 2,250,149 BAG TURNING ANn LINING MACHINE Lawrence Buttigieg, San Francisco, Calif.

Application December 28, 1940, Serial No. 372,147 5 Claims. (,o1.22s 40) My invention relates to improvements in a bag turning and lining machine wherein spaced fingers hold open the mouth of a bag while a pair of reciprocating rams invert or turn said bag by pushing the same through said open mouth. 31

Primarily, bags are turned in order to place the raw edges of the sewed sides and end within the interior of said bag to improve the appearance thereof. In the present state of the art, certain bags are lined with a second bag of finer or closer weave. These liners are usually inserted manually, entailing expensive time and labor. In certain classes of bags, the liners are unturned, that is to say, the raw edges on the sewed sides are left outwardly, while in other classes, owing to the nature of the intended contents, the liners are turned also.

The present invention comprises the combination, with a bag turning machine, of the provision of additional and preferably double bag receiving fingers between the present fingers and. the forward ends of the rams when said rams are in receded position, to hold either a turned or unturned liner or already turned bag in a position to be inserted or turned and inserted into a bag on the receiving fingers.

The primary object of the present invention is to provide, in combination with a bag turning machine, new and improved means for inserting a liner within a bag on said machine.

Another object is to provide a new and improved device of the character described having improved means for turning and inserting a liner into a bag.

A further object is to provide new and improved means for automatically delivering a lined bag from said machine.

The invention consists in the several parts, in combination with a bag turning machine, as disclosed in the drawings forming a part of the present application, and in which- Fig. 1 is a longitudinal, vertical section taken on line II of Fig. 2, in the direction indicated, of one form of a bag turning machine, disclosing my improvement applied thereto;

Fig. 2 is a plan view of the device, with the bag and liner supports or shelves removed from the top thereof;

Figs. 3 to 8, inclusive, are broken sectional views disclosing successive stages or positions of the several parts in turning a bag and inserting a liner thereinto;

Fig. 9 is a vertical transverse sectional view taken on line 9-9 of Fig. 1, in the direction indicated, and disclosing a bag held open ready to receive a liner; and

Fig. 10 is a broken, vertical sectional View, disclosing the arrangement of a bag and liner, when said liner is to be inserted within an already turned or used bag;

Referring to the drawings:

The numeral l is used to designate a suitable frame having a pair of horizontally disposed parallel rods 2 upon which is slidably mounted a plate 3 connected by a link 4 to a lever B rigidly secured to the approximate center of a shaft 1 rotatably mounted within the frame I and carrying a second lever 8 connected by a connecting rod 9 to a gear wheel II on a shaft I2, which shaft I2, in the present art, is the main shaft of one type of bag turning machine.

Upon the reciprocating plate 3 are pivotally mounted, as at I 4, a pair of rams I6 provided with laterally positioned rollers I'I engaging guides I8 mounted upon the top of the frame l and provided to separate said rams I6 horizontally ona forward stroke, to completely invert the corners of a bag being turned, against the tension "of a spring I9 connecting said rams I6, as indicated in dotted lines in Fig. 2 of the drawings.

A pair of spaced upper bag receiving fingers 2| are mounted on a transverse rod 22 in the frame I, and a pair of spaced lower bag receiving fingers 23, oilset as at 24 to permit the passage of a bag being turned, are rigidly mounted on a second transverse rod 26 rotatably mounted within said frame I and actuated by a lever 21, rod 28, rocker 29 and cam 3| to raise and lower said lower offset fingers 23 to release or hold open one side of the mouth of a bag being turned.

A pair of gear connected feed or delivery rolls 32 are drivenby a common gear 33, which gear 33 also drives a-second pair of geared rolls, in the present art, 24 and 26 to strip a turned bag from the rams I 6 in their extreme forward position, indicated in Fig. 2 of the drawings.

The above described mechanism comprises substantially one form of bag turning machine at present in commercial use, with the minor differences that the cam 3| is on a single driving shaft I2 and the gear 33 is driven, by means of the chain 31, from said shaft I2.

The present art also comprises a shelf or support 38 upon which are placed bags B to be turned.

At the beginning and end of a bag turning operation, the lower fingers 23 are closed upon the fingers 2|, or in receiving position, substantially as disclosed in Fig. 8 of the drawings. While in this position, that is to say, at the beginning of a bag turning operation, a bag B is moved forward from the top of the pile on the shelf 38 and opposite sides of the mouth or open end of said bag B are placed above and below the closed fingers 2| and 23, respectively. Rotation of the shaft l2 will in turn rotate the cam 3| and, through the medium of the rocker 29, rod 28, lever 21 and transverse rod 25, lower the lower fingers 23 and press that side of the open end of the bag B against a sill 4| formed by an adjacent portion of the frame I, as disclosed in Fig. 1 of the drawings. A forward movement of the rams I6 will engage and thrust the exterior of the bag B through the opened mouth of said bag as disclosed in successive stages in Figs. 3 and 4, of the drawings, and, in present usage, shove the bottom or closed end of the turned bag B between the geared feed rolls 34 and 36 which will deliver said turned bag to the delivery or ejecting rolls 32, which action will also strip the mouth of the bag B from the fingers 2| and 23, the said fingers 23 having previously been raised by action of the cam 3| to release pressure on said bag B against the sill 4|. In the present art or usage, a bag is turned and delivered for each reciprocation of the rams IS.

The present invention comprises the combination, with the above described bag turning machine, of added and preferably double upper and lower bag receiving fingers 5| and 52, respectively, and preferably of open wire or slightly flexible or resilient construction, as shown, and superimposed one upon the other. These fingers 5| and 52 are mounted upon the upper ends of vertically disposed frames, 53 and 54, respectively,

slidably mounted within the frame I and projecting through the sill 4| thereof, and between the first mentioned bag receiving fingers 2| and 23 and the forward end of the rams l6 when said rams are in full receded or inoperative positions.

The added fingers 5| and 52 are double in that they extend in opposite directions from their respective supports, or that is to say, away from and toward the first mentioned fingers 2| and 23, for a purpose hereinafter fully set forth.

A pair of horizontally disposed and Vertically movable levers 55 and 56 are pivotally mounted at one end, as at 51, on the frame I and are separately actuated by cams 58 and 59, respectively, fixed to a shaft 6|, which cams engage rollers 62 on said levers 55 and 56, said shaft also carrying the cam 3| for operating the first mentioned fingers 2| and 23. The other ends ofthe levers 55 and 56 are operatively connected to the vertically slidable frames or supports 53 and 54, respectively. 7

A gear 63 on the shaft 6| meshes with a pinion 34 connected to a gear 66 of twice the diameter of said pinion 64, said pim'on 54 and gear 65 be- .ing mounted upon a main drive shaft 6'! with the gear 66 meshin with the gear [I of the shaft I2. By means of this arrangement the first mentioned fingers 2| and 23 are now actuated to open and close only after two successive and complete ,reciprocations of the rams 3, instead of after only one reciprocation of said rams, as heretofore described for a bag turning machine.

Flexible supports H are secured to and extend from the sill 4| to a point between the, rolls 34 and 36. Said rolls, instead of being geared together as formerly are driven with the gear 34 directly from the gear 33 while the upper roll 36 ,is rotatably mounted within ayoke '|2 pivotally mounted upon the axle or shaft of the upper roll 32 and said roll 36 is driven from said upper roll 35 by means of an idler gear 13, more clearly disclosed in Fig. 3 of the drawings. The free or outer end of the yoke 12 is connected by a rod 13 to that end of the rocker 29 engaged by the cam 3| and operates in conjunction with the first mentioned fingers 2| and 23 so that the upper roll 36 is lowered into engaging relation with the lower roll 34 to strip a turned bag B from said lower fingers 23 only when said lower fingers 23 are raised from the sill 4| to release pressure upon a bag.

A second shelf or support it is mounted upon the frame I and preferably above the rolls 34 and 35 in order to leave a space between its rear edge and the front edge of the bag support 38. The second shelf 16 is provided to support a pile of liners L to be inserted into the bags B on the shelf 38.

The operation of my improvement is as follows:

The first mentioned fingers 2| and 23 being closed or in a bag receiving position, substantially as disclosed in Fig. -8 of the drawings, the opposite sides of a bag B are placed above and below the fingers 2| and 23, respectively, and said bag B is turned by a single reciprocation, or forward thrust of the rams 15, as hereinbefore described and illustrated in Figs. 1 and 3 to 5, inclusive, of the drawings, with this difference. The fully turned bag B, instead of being instantly stripped from the rising fingers 23 as in present machines,

'is laid out upon the supports 1 In the present improvement, just previously to the start of the forward stroke of the rams "5 just referred to, the double fingers 5| and 52 start to rise to liner receiving position, as disclosed in Fig. 1 of the drawings, the rapid forward movement of said rams readily dragging the trailing end of the bag B being turned over the said fingers 5| and 52 whose supporting frames 53 and 54, respectively, straddle said rams l5, thus permitting them free movement.

By the time the rams IE have completed their forward stroke and turned and laid the bag B upon the supports H, the double fingers 5| and 52 have been raised by the action of the cams 55 and 55 to their uppermost or closed and bag receiving positions, as disclosed in Fig. 4 of the drawings. 'While in this position a liner L is brought from the pile onthe shelf 16 and placed with opposite sides of its open end or mouth above and below the portions of the double fingers 5| and 52, respectively. During the return stroke of the rams I6 the lower double fingers 52 arelowered to press their side of the liner upon the sill 4| while the upper fingers 5| are lowered only a sufficient distance to hold open the mouth of the liner. If the mouth of the liner L has been placed upon the fingers 5| and 52 extending toward the first mentioned fingers 2| and 23, then the next stroke or reciprocation of the rams |5will enter the open mouth of the liner L, engage the interior thereof, and insert the said liner L into the turned bag B, as disclosed in Fig. '7 of the drawings, in which figure the bag B and liner L are represented by heavy and light broken lines, for greater clarity. If, on the other hand, a liner L is to be turned and inserted within a used or already turned bag, which is frequently required in many industries, then the alreadyturned bags B are placed upon the shelf 16 and the unturned liners are placed upon the shelf'38. In this case,,only the double fingers 5| and 52 amused, and the turned bag B is placed upon those portions of the double fingers i and 52 extending toward the first mentioned fingers 23, which remain idle or unused, and the liner L to be turned is placed upon the oppositely extended portions of the fingers 5| and 52 with the result that a stroke or reciprocation of the rams IE will turn and insert a liner into an already turned bag B. The arrangement before the starting of the rams l6 for the above de scribed operation of turning a liner L into an already turned bag B is fully disclosed in Fig. 10 of the drawings.

After the rams l6 have laid a lined bag upon the supports H, as disclosed in Fig. 7 of the drawings, during the return stroke of said rams l6 the lower first mentioned fingers 23, in the case of a bag just turned and next lined, said fingers 23 and also the double fingers 52 will be raised sufiiciently from the sill 4| to release their respective bags and liners. The action of the cam 3! in raising the fingers 23 to closed or bag receiving position for the next operation, will lower the yoke l2 and permit the upper roll 36 to enter into engaging relation with the lined bag upon the support H and partly resting upon said lower rolls 34, and thereby feed said lined bag to the rolls 32 by means of which rolls 32 said lined bag is ejected from the machine.

From the foregoing it is obvious that with my improvement, in combination with a bag turning machine, that substantially the same machine, with little addition, may be utilized to also line a bag as well as turning the same and also that a liner may be turned and inserted or lined into an already turned bag.

Having described my invention, I claim- The combination with a bag turning machine having bag receiving fingers and reciprocating rams, of a second set of receiving fingers slidably mounted on said machine and between said first mentioned fingers and said rams, said second mentioned fingers being extended toward said first mentioned fingers whereby an unturned liner on said second fingers may be inserted unturned into a bag on said first fingers by said rams; means for closing and'opening said first fingers to receive and hold open a bag only after two successive reciprocations of said rams; and means for closing said second fingers to receive a liner during each first reciprocation of said rams and for opening said second mentioned fingers to hold an opened mouth of a liner between said first fingers and a bag thereon and said rams only during each second reciprocation of said rams.

2. The combination with a bag turning machine having bag receiving fingers and reciprocating rams for turning a bag on said fingers, of a second set of receiving fingers slidably mounted on said machine and between said first mentioned fingers and said ram, said second mentioned fingers being extended away from said first mentioned fingers whereby a liner on said second mentioned fingers may be turned and inserted by reciprocation of said rams into a. bag

on said first mentioned fingers; means for closing and opening said first mentioned fingers only before and after two successive reciprocations of said rams; and means for opening said second mentioned fingers to open a liner thereon during the second reciprocation of said rams.

3. The combination with a bag turning machine having bag receiving fingers and reciproeating rains for turning a bag held open on said fingers, of a second set of double receiving fingers slidably mounted on said machine and between said first mentioned fingers and said rams, said double fingers being extended toward and away from said first mentioned fingers whereby a liner held open on one side of said double fingers may be turned and inserted by reciprocation of said'rams into a bag on said fingers and a liner on the other side of said double fingers may be inserted unturned by said rams into said bag.

4. The combination with a bag turning machine having bag receiving fingers and reciprocating rams for turning a bag held on said open fingers, of a second set of double receiving fingers slidably mounted on said machine and between said first mentioned fingers and' said rams, said double fingers being extended toward and away from said first mentioned fingerswhereby a liner held open on one side of said double fingers may be turned and inserted by reciprocation of said rams into a bag on said first fingers and a liner on the other side of said double fingers may be inserted unturned by said rams into said'bag, means for closing and opening said first mentioned fingers before and after each two successive reciprocations of said rams; and means for closing said double fingers to receive a liner and for opening said double fingers during each second reciprocation of said rams.

5. The combination with a bag turning machine having bag receiving fingers and reciprocating rams for turning a bag held on said fingers, of a second set of bag receiving fingers slidably mounted on said machine and between said first mentioned fingers and said rams, said second mentioned fingers being double fingers extending in opposite directions and away from and toward said first mentioned fingers, whereby a liner held on one side of said double fingers may be turned and inserted by reciprocation of said rams into a bag on said first mentioned fingers and a liner on the opposite side of said double fingers may be inserted unturned by said rams into said bag; means for closing and opening said first mentioned fingers before and after each two successive reciprocations of said rams; means for closing said double fingers to receive a liner and for opening said double fingers to hold a liner thereon open during each second reciprocation of said rams; and means for stripping a turned bag and liner therein from their respective fingers at each two successive reciprocations of said rams.

LAWRENCE BU'ITIGIEG. 

